Question

how the heart work ..?

Answer 1

Hey friend here is your answer:-----

The heart has two sides separated by a muscular wall.

The heart has two sides – left and right, separated by a muscular wall. 

There is an upper and lower chamber on each side connected by valves that direct the flow of blood. 

The smaller upper chambers are known as the atria and the larger lower chambers are the ventricles. 

The pumping of the heart is controlled by special fibres that conduct electrical signals to the various chambers. 

The right side of the heart pumps the blood to the lungs, where it receives oxygen. 

Blood enters the left side of the heart from the lungs and the heart pumps the oxygen-rich blood around the body. 

Coronary arteries 

Coronary arteries supply the heart muscle with blood. The left and right coronary arteries divide many times to spread over the heart muscle wall and give it blood and oxygen. 

The coronary arteries get blood from the aorta, the major artery taking blood to the rest of the body. 

Coronary heart disease

Coronary heart disease affects many people. It’s a chronic condition – that means it is long term. 

Coronary heart disease happens when fatty material builds up in your arteries. This makes them narrower. The fatty material is called ‘plaque’. Plaque builds up slowly, and this process is called atherosclerosis. It can start when you are young and be well advanced by middle age. 

Stable plaque is generally not harmful but if the arteries narrow too much it can cause angina.  

Unstable plaque has more fat, a thin cap and is inflamed. It does not have to be associated with severe narrowing of the artery. Unstable plaque can develop a crack on the surface, exposing the contents of the plaque to the blood. Blood cells try to seal the gap in the surface.....

Hope it helps you.....


PLEASE:-MARK AS BRAIN LIST

Answer 2

$\huge\mathfrak{\red{Heya\:Mate}}$

$\large\textbf{\underline{HERE\:IS\:YOUR\:ANSWER}}$

The heart is a muscular organ. It has different chambers to prevent the mixing of Oxygenated and De-oxygenated blood. The blood containing carbon dioxide has to reach the lungs to remove carbon dioxide and the oxygenated blood from the lungs has to brought back to the heart and then pumped to the rest of the body.

$\underline{Different\: parts\: of\: heart\:are:-}$

⏩ Left Atrium

⏩ Left Ventricle.

⏩ Right Atrium.

⏩ Right Ventricle.

⏩ Pulmonary arteries.

⏩ Pulmonary veins.

⏩ Upper Vena Cava.

⏩ Lower Vena Cava.

⏩ Septum.

⏩ Aorta.

$\huge\mathfrak{Working \:of \:heart}$

⭕️ Oxygenated blood from the lungs comes to the thin walled upper chamber of the heart on the left, the left atrium.

⭕️ The left atrium relaxed when it is collecting this blood. It then contrast, while the next chamber, the left ventricle, expands, so that the blood is transferred to it.

⭕️ When the muscular left ventricle contracts in its turn, the blood is pumped out to the body.

✔️ De-oxygenated blood comes from the body to the upper chamber on the right, the right atrium, as it expands.

✔️ As the right atrium contracts, the ventricle collects the blood.

✔️ Then this blood it pumped into the lungs for oxygenation.

✔️ Then it is brought back to heart and then pumped to the rest of the body.

$\large\textbf{HOPE\:IT\:HELPS\:YOU!!}$